Using the joint file system, when there are too many files in the folder, it is very time-consuming to execute the ls command

[gocpplua]

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1. Create the union folder using the following command：

   sudo mergerfs -o defaults,security_capability=false,xattr=noattr,xattr=nosys,cache.files=off,dropcacheonclose=true,category.create=mfs,minfreespace=1024M,func.getattr=mfs /data/nfs:/data/local/ /data/mermge

2. Copy more than 6000 images to /data/mermge
3. Execute the following command

   $ time ls
   real    1m0.949s
   user    0m0.124s
   sys 0m0.324s

The command takes over 1 minute to return, whereas it takes less than 1 second without the union filesystem

[trapexit]

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